L.A. five-piece Milo Greene recently made their debut appearance on "Late Show with David Letterman," and they have a tip for any up-and-coming musicians about to reach the same milestone: "Look pretty" and "don't screw up." It's that simple, people.

Milo Greene's Andrew Heringer and Graham Fink stopped by to chat at Lollapalooza and along with that little piece of advice, the band also chatted their debut album, celebrating their No. 1 spot on Billboard's Heatseekers chart and how they got their name. Spoiler alert: Milo Greene is not a real person.

Watch our interview with Milo Greene above, and check out the rest of our Lollapalooza 2012 coverage.